Cisco IOS Firewall Security Feature Set

Cisco systems software has developed a version of IOS with security-specific features integrated in current IOS software. It is available only on some Cisco IOS devices.


The need to provide firewall functionally in existing router models led Cisco down a path of enabling IOS to be security aware. Not many folks think of Cisco as a software company but, in fact, they sell more software than hardware.

The Cisco IOS features set consists of the following:

  • Context-based Access Control (CBAC) provides internal users secure, per-application-based access control for all traffic across perimeters, such as between private enterprise networks and the Internet.

  • Java blocking protects against unidentified, malicious ...

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